Funny I'm in the same position - I only ride here in OZ 3 months of the year and the ST1100 will sit for 9 months :(
That's a serious shame and not great for the bike.
I chatted with cop who helped me buy the bike and may ride is a bit while I'm gone.
He said there is no issue sharing a bike as long as insurance coverage is correct.
I figure sharing would be
Break it fix it and both split the cost of collision/comprehensive insurance...which for a $5k bike not all that much.
Split the cost of regular maintenance. Pay your own gas and tickets.
Think if the riders are mature and responsible there is not an issue with it.
Thinking of doing it with some of the riders from Canada notably this pair - save them shipping their bikes to Aus. It's a great read BTW
http://www.gtamotorcycle.com/vbforum/showthread.php?161571-Quit-our-jobs-sold-our-home-and-everything-in-it-gone-riding&p=1975683#post1975683Look - the STs are big time durable machines which is why the cops used them and they stay at the top of the desirable used touring bikes.
I can't believe how solid my 20 year ride is.
If one is doing a lot more riding then maybe he pays a bit more tires come replacement time.
The insurance coverage is key from what friend says.